Connecting Health. ConHHL7 Workbench Trial! Try it Now! Define your grammar, test messages, and easily incorpate HL7 into your your application. Use the .Net Utility Class or use the ActiveX/Com interfaces. It is extremely fast, very easy to use. The Workbench is based on XML technology. HL7 itself is difficult: The grammar as well as the TCP/IP Protocol are difficult to use for most prorammers. The ConHHL7 workbench hides away from these...